Comfort and Convenience
Cabin temperature is the classic point of disagreement: one person wants airflow on their face, another finds the same setting too cool. Differences in clothing and where someone sits explain much of it.
Safety and Driver Assistance
A minute spent before pulling away, setting mirrors and locating lights, wipers and the hazard switch, means those things are already known rather than searched for once the car is moving.
Multimedia and Connectivity
Phone battery drains fastest on long drives with navigation running, so a power source matters; if charging is available on board, passengers can keep their own devices topped up without competing for one cable.